Remove duplicate code for old ie
Remove duplicate code for old ie

txchen/riotjs,muut/riotjs,noodle-learns-programming/riot,scalabl3/riot,daemonchen/riotjs,joshcartme/riot,sylvainpolletvillard/riot,joshcartme/riot,zawsx/js-lib-webcomponents-react-riot,chetanism/riot,duongphuhiep/riot,qrb/riotjs,rthbound/riot,txchen/riotjs,baysao/riot,thepian/riot,zawsx/js-lib-webcomponents-react-riot,muut/riotjs,crisward/riot,mike-ward/riot,xtity/riot,laomu1988/riot,duongphuhiep/riot,AndrewSwerlick/riot,baysao/riot,chetanism/riot,beni55/riot,dp-lewis/riot,madlordory/riot,davidmarkclements/riot,seedtigo/riot,marcioj/riot,dschnare/riot,beni55/riot,mike-ward/riot,dp-lewis/riot,stonexer/riot,AndrewSwerlick/riot,stonexer/riot,crisward/riot,laomu1988/riot,qrb/riotjs,sylvainpolletvillard/riot,scalabl3/riot,rasata/riot,noodle-learns-programming/riot,marcioj/riot,dschnare/riot,tao-zeng/riot,xtity/riot,tao-zeng/riot,rasata/riot,madlordory/riot,davidmarkclements/riot,thepian/riot,seedtigo/riot,daemonchen/riotjs,rthbound/riot